Does the inverter charge the batts? I presume so. Where did you get the inverter?
From: Adam Moffett Sent: Monday, October 31, 2016 1:26 PM To: [email protected] Subject: Re: [AFMUG] Tesla powerwall 2 I ran 6/3 armored with ground between each device.� There are 1/2" knockouts on the connection box on the inverter/charger so I bought a couple of BX connectors.� It comes with romex type clamps.....I used armored because I don't think it would be legit to run Romex on top of a finished wall. The inverter/charger input needs 240v so it gets hot+hot+ground.� The output is hot+hot+neutral to the subpanel.� The transfer switch "Mains" connection is actually coming from a 50a breaker in the main panel.� I just removed the ground/neutral bond and it works fine as a subpanel.� So we now have color coded outlets on the wall with White outlets being gen+battery protected and Grey outlets being unprotected (straight from the main panel). I don't know exactly what the response time is for switching from charger to inverter, but when I flip off the breaker nothing reboots....so it's quick enough for me.� When the generator starts, this switches back to charger mode after a 15 second delay. I can't wrap my head around how this works with the inverter, generator, and utility power all being a different phase; but I know it does work. This does have an LVD which I know you don't like, but there's a jumper to select whether you favor more runtime or more battery life.� You can't disable the LVD completely; the jumper just changes the cutoff voltage. Also, be aware that the 12KW model weighs over 200lbs.� Definitely need two people to install it. On 10/31/2016 3:02 PM, Chuck McCown wrote: 12 kw?� Sine wave? How is it wired in with the transfer switch and mains power? � From: Adam Moffett Sent: Monday, October 31, 2016 1:01 PM To: [email protected] Subject: Re: [AFMUG] Tesla powerwall 2 � http://www.aimscorp.net/12000-Watt-Inverter-Charger-48-volt-120-240vac.html This has a street price of $2500.� The four SLA batteries were (I think) $160 each.� The 3/0 battery cable was not free, but I don't remember what it cost.� This is only 4800 Wh, but it's trivial to add more/bigger batteries.� This doesn't have any built in network monitoring though.....does the Powerwall? � On 10/31/2016 2:14 PM, Peter Kranz wrote: The new tesla powerwall 2 appears to be an interesting UPS option now that it has a build in inverter/charger. 14kWh for $5500, so would run most of my sites for about 24 hours. When I backed out the costs for 14kWh of our standard AGM cells and inverter, I think this price is quite reasonable. � https://www.tesla.com/powerwall � Peter Kranz www.UnwiredLtd.com Desk: 510-868-1614 x100 Mobile: 510-207-0000 [email protected] �
